CN115639830A - Air-ground intelligent agent cooperative formation control system and formation control method thereof - Google Patents
Air-ground intelligent agent cooperative formation control system and formation control method thereof Download PDFInfo
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Abstract
The invention relates to an air-ground intelligent agent cooperation formation control system and a formation control method thereof, and belongs to the technical field of intelligent agent formation control. The formation control system comprises an air-ground cooperative system dynamic module, a nominal control module, an interference suppression control module and a control instruction fusion module. The nominal control module and the interference suppression control module are able to achieve the desired synergy. Compared with the traditional air-ground coordination system, the method can execute more complex tasks, effectively inhibit the problems of model mismatching and external interference and realize safe and stable coordination among air-ground intelligent agents.
Description
Technical Field
The invention belongs to the technical field of intelligent agent formation control, and particularly relates to an air-ground intelligent agent cooperation formation control system and a formation control method thereof.
Background
The air-ground intelligent agent cooperative control refers to a cooperative whole formed by an air intelligent agent (such as an unmanned aerial vehicle) and a ground intelligent agent (such as an unmanned vehicle) with function difference, and the air-ground intelligent agent cooperative control and the ground intelligent agent can realize function complementation and energy efficiency multiplication through cooperative control, information interaction, task allocation and cooperation, so that the response capability of executing complex environments and complex tasks is improved. Nowadays, informatization equipment is rapidly developed, and an air-ground multi-domain intelligent agent cooperative system integrating one domain, multiple layers and air-ground is more and more widely valued internationally.
In these complex tasks, the performance of the air-ground cooperative control mainly depends on the cooperative control. Currently, there have been researches on air-ground cooperative control, such as: chinese patent applications CN109240331B and CN106054922B, which utilize neural network to design unmanned aerial vehicle-unmanned vehicle combined formation controller. However, the neural network requires a certain learning time, and is high in operation complexity and not easy to implement.
Disclosure of Invention
In view of the above problems, the invention provides an air-ground intelligent agent collaborative formation control system and a formation control method thereof, which are used for solving the problem that the complex air-ground collaborative task cannot be safely and stably completed due to the problems of environmental interference and model mismatching in the task execution process of the existing air-ground collaborative system.
In order to solve the technical problem, on one hand, the invention provides an air-ground intelligent agent collaborative formation control method, which comprises the following steps:
step one, establishing a motion model of an unmanned aerial vehicle and an air-ground intelligent agent cooperative formation of the unmanned aerial vehicle:
wherein the content of the first and second substances,p ti is shown asiA coordinate vector of the unmanned aerial vehicle in the flight process,
is shown asiErecting a flight acceleration vector of the unmanned aerial vehicle;R ti representing the inertial coordinate system andierecting a conversion matrix between the coordinate systems of the unmanned aerial vehicle body;F if is shown asiAerodynamic force generated by the unmanned aerial vehicle body is erected;grepresenting a gravitational constant;c 3,3 representing a three-dimensional column vector;D pi is shown asiThe unmanned aerial vehicle is provided with an external interference force and an unknown model part under the influence of environmental wind;ω ti is shown asiErecting the angular speed of the unmanned aerial vehicle rotating around the self body coordinate system;
is shown asiErecting the angular acceleration of the unmanned aerial vehicle rotating around the self body coordinate system;
show thatω ti Performing antisymmetric matrix operation;J ti is shown asiErecting the rotational inertia of the unmanned aerial vehicle;u pi is shown asiThe position of the unmanned aerial vehicle is fused with a control command,u ai is shown asiAn unmanned aerial vehicle attitude control input instruction is erected;M iw is a firstiThe unmanned aerial vehicle is supported by aerodynamic moment;
is shown asjThe vehicle is unmannedOXShaft andOYa three-dimensional vector consisting of an acceleration in the axial direction and an angular acceleration in the yaw direction;u gj is shown asjFusing control instructions on the positions of the unmanned vehicles;D ai is shown asiExternal interference torque and model of unmanned aerial vehicle due to influence of environmental windAn unknown portion;D gj is shown asjThe unmanned vehicle is influenced by the external interference and the unknown part of the model due to the environmental wind;
B pi ，B ai andB gj respectively representiParameter matrix of the position of the unmanned aerial vehicle, secondiErecting a parameter matrix and a parameter matrix of the pose of the dronejA parameter matrix of the positions of the vehicles without vehicles,E gj is shown asjAcceleration vector of acceleration and yaw direction angular acceleration coupling of the unmanned vehicle;
step two, establishing a nominal control law of the unmanned aerial vehicle and the unmanned vehicle according to the motion models of the unmanned aerial vehicle and the unmanned vehicle in the step one, wherein the motion models are formed by the unmanned aerial vehicle and the unmanned vehicle in an air-ground intelligent agent cooperation mode;
step three, establishing an interference suppression control law of the unmanned aerial vehicle and the unmanned vehicle according to the motion models of the unmanned aerial vehicle and the unmanned vehicle air-ground intelligent agent cooperative formation in the step one;
and step four, combining the nominal control law and the interference suppression control law in the step two and the step three to obtain a fusion control law.
Optionally, the first in the step oneiParameter matrix for unmanned aerial vehicle positionB pi The first stepiParameter matrix for unmanned aerial vehicle attitudeB ai And a firstjParameter matrix of unmanned vehicle positionB gj And a firstjAcceleration vector of acceleration and yaw direction angular acceleration coupling of unmanned vehicleE gj Respectively, as follows:
wherein the content of the first and second substances,m ti denotes the firstiErecting the mass of the drone;m gj is shown asjMass of the unmanned vehicle;V xj is shown asjThe vehicle is unmannedOXSpeed in the axial direction;V yj is shown asjThe vehicle is unmannedOYSpeed in the axial direction;J gj is shown asjThe moment of inertia of the unmanned vehicle;Q gj is shown asjAngular velocity of the unmanned vehicle in the yaw direction;C gj is shown asjThe drag coefficient of the unmanned vehicle in the running process.
Optionally, the nominal control laws of the unmanned aerial vehicle and the unmanned vehicle in the step two are as follows:
wherein the content of the first and second substances,u pi N ，u ai N respectively represent the firstiA position nominal control instruction and an attitude nominal control instruction of the unmanned aerial vehicle,u gj N is shown asjControlling a nominal command of the position of the unmanned vehicle;K tp ，K td is shown asiErecting two 3 x 3 parameter matrixes of a nominal controller on an unmanned aerial vehicle position channel;K ap ，K ad is shown asiErecting two 3 x 3 nominal controller parameter matrixes of a nominal controller on an unmanned aerial vehicle attitude channel;K gp ，K gd is shown asjTwo 3 x 3 parameter matrices of a nominal controller for an unmanned vehicle;q ti is shown asiErecting a nominal controller parameter constant on the unmanned aerial vehicle position channel;q ai is shown asiSetting a nominal controller parameter constant on an attitude channel of the unmanned aerial vehicle;q gj is shown asjA nominal controller parameter constant for the unmanned vehicle;Z ti is shown asiErecting a position motion error of the unmanned aerial vehicle in a formation;Z gj is shown asjThe position and motion errors of the unmanned vehicles in the formation;
representing the state information of the formation center of the air-ground cooperative formation in an inertial coordinate system;e ai is shown asiThe attitude error of the unmanned aerial vehicle is erected,
is shown asiErecting an attitude angular velocity error of the unmanned aerial vehicle;
and the first-order sliding mode surface represents the nominal control of the air-ground intelligent agent cooperation formation.
Optionally, the first in the second stepiPosition motion error of unmanned aerial vehicle in formationZ ti And a firstjPosition motion error of unmanned vehicle in formationZ gj The expression is as follows:
wherein the content of the first and second substances,w ik denotes the firstiErect unmanned aerial vehicle and secondiErect unmanned aerial vehiclekA weight coefficient of frame neighbor unmanned aerial vehicle communication;p ti denotes the firstiCoordinate vectors of the unmanned aerial vehicle in the ground coordinate system,p tk is shown asiSet up unmanned aerial vehicle the secondkErecting a coordinate vector of the neighbor unmanned aerial vehicle in a ground coordinate system;w jn is shown asjThe unmanned vehicle and the firstjThe first of unmanned vehiclesnThe weight coefficient of the vehicle neighbor unmanned vehicle communication,p gj is shown asjVehicle unmannedThe coordinate vector of the vehicle in the ground coordinate system,p gn is shown asjThe first of unmanned vehiclesnCoordinate vectors of the neighboring unmanned vehicles in the ground coordinate system;h ti is shown asiErecting the position deviation of the unmanned aerial vehicle and the formation center;h gj is shown asjThe position deviation between the unmanned vehicle and the formation center;h tk denotes the firstiErect unmanned aerial vehiclekErecting the position deviation between the neighboring unmanned aerial vehicle and the formation center;h gn is shown asjFirst of unmanned vehiclenThe position deviation between the unmanned vehicle of the vehicle neighbor and the formation center; first, theiErect unmanned aerial vehicle and secondiSet up unmanned aerial vehicle the secondkThe position deviation of the unmanned aerial vehicle adjacent to the frame ish tik =h ti -h tk (ii) a First, thejThe unmanned vehicle and the firstjFirst of unmanned vehiclenThe position deviation of the neighboring unmanned vehicle ish gjn =h gj -h gn 。
Optionally, the air-ground agent in the step two cooperates with the first-order sliding mode surface of the formation nominal control
The expression is as follows:
wherein the content of the first and second substances,e ti ，e ai ande gj respectively representiSet up unmanned aerial vehicle position error, secondiErect unmanned aerial vehicle attitude error andjthe vehicle has no position error of the vehicle;
respectively representiSpeed error of unmanned aerial vehicleiFrame unmanned aerial vehicle angular acceleration error and secondjVehicle unmanned vehicle speed error;K ti is shown asiErecting a 3 x 3 parameter matrix on the unmanned aerial vehicle position channel;K ai denotes the firstiErecting a 3 multiplied by 3 parameter matrix on an unmanned aerial vehicle attitude channel;K gj denotes the firstj3 x 3 parameter matrixes on the unmanned vehicle movement channel;S ti ，S ai andS gj first-order sliding mode surface for respectively representing air-ground intelligent agent collaborative formation nominal control
Integral of (2);τa time-integrated variable is represented by,d τ representing integral variablesτThe increment of (a) is increased by (b),e ti (τ)，e ai (τ) Ande gi (τ) Respectively representiFrame unmanned aerial vehicle position error integral function, number oneiPose error integral function andjand (4) a vehicle unmanned vehicle position error integral function.
Optionally, the interference suppression control law of the drone and the drone vehicle in step three is:
wherein the content of the first and second substances,u pi S denotes the firstiAn interference suppression control instruction is arranged on the unmanned aerial vehicle position channel,u ai S is shown asiAn interference suppression control instruction is set on the attitude channel of the unmanned aerial vehicle,u gj S is shown asjA vehicle unmanned vehicle interference suppression control command;l pi ，l ps is shown asiTwo one-dimensional interference compensation control parameter constants on the unmanned aerial vehicle position channel,l ai ，l as is shown asiTwo one-dimensional interference compensation control parameter constants on the attitude channel of the unmanned aerial vehicle are erected,l gj ，l gs denotes the firstjTwo parameter constants of one-dimensional interference compensation control of the unmanned vehicle;
represents a step function if
，
Otherwise
Represents a step function if
，
Otherwise
Which is a function of the number of steps,
if it is not
On the other hand, the air-ground intelligent agent cooperative formation control system provided by the invention comprises an air-ground cooperative system dynamic module, a nominal control module, an interference suppression control module and a control instruction fusion module;
the nominal control module is used for receiving self state information and neighbor state information of the unmanned aerial vehicle and the unmanned aerial vehicle, and obtaining a nominal control instruction after processing the self state information and the neighbor state information; outputting the nominal control instruction to a control instruction fusion module;
the interference compensation control module is used for receiving self state information of the unmanned aerial vehicle and the unmanned aerial vehicle, and obtaining an interference suppression control instruction after processing the self state information; outputting the interference suppression control instruction to a control instruction fusion module;
the control instruction fusion module is used for processing the nominal control instruction and the interference suppression control instruction to obtain a fusion control instruction; outputting the fusion control instruction to the air-ground cooperative system dynamic module;
the air-ground cooperative system dynamic module comprises an unmanned aerial vehicle dynamic module and an unmanned vehicle dynamic module and is used for receiving a fusion control instruction and controlling the operation of the unmanned aerial vehicle and the unmanned vehicle.
Compared with the prior art, the invention has the following beneficial effects:
(1) The air-ground intelligent agent collaborative formation control method is low in complexity and easy to achieve collaborative formation among air-ground multi-domain intelligent agents.
(2) The interference suppression control module of the air-ground intelligent agent collaborative formation control system can operate under the influence of model mismatching and external interference, and the technical effect of formation collaborative task under various influences of air-ground intelligent agent collaborative formation control is realized.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed in the embodiments will be briefly described below, and the features and advantages of the present invention will be more clearly understood by referring to the drawings, which are schematic and should not be construed as limiting the present invention in any way.
Fig. 1 is a block diagram of a conventional air-to-ground agent coordination system.
FIG. 2 is a schematic diagram of an agent in an inertial coordinate system and a body coordinate system.
Fig. 3 is a block diagram of the air-ground agent cooperative formation control system of the present invention.
Fig. 4 is a schematic three-dimensional space position diagram of 2 drones and 2 unmanned vehicles in the embodiment of the present invention.
Fig. 5a is a position tracking error curve in the X-axis direction of 2 drones in the embodiment of the present invention.
Fig. 5b is a position tracking error curve in the Y-axis direction of 2 drones in the embodiment of the present invention.
Fig. 5c is a Z-axis position tracking error curve of 2 drones in the embodiment of the present invention.
Fig. 6a is a position tracking error curve in the X-axis direction of 2 unmanned vehicles in the embodiment of the present invention.
Fig. 6b is a position tracking error curve in the Y-axis direction of 2 unmanned vehicles in the embodiment of the present invention.
Description of reference numerals:
100-air-ground agent cooperation system dynamic module; 200-a nominal control module; 300-an interference suppression control module; 400-control command fusion module.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the invention, in order to realize the state representation of the unmanned aerial vehicle and the unmanned vehicle, an inertial coordinate system is usedE Ground -OXYZAnd a body coordinate system of the agentE Body -O b X b Y b Z b ；
Wherein the inertial coordinate systemE Ground (floor) -OXYZFor a coordinate system fixed to the earth's surface, the origin of the coordinate systemOIs selected to be on a point of the ground plane,OXthe axis is the direction pointing towards the target,OYaxis perpendicular toOXThe shaft is provided with a plurality of axial holes,OZthe axis is perpendicular to other two axes and forms a right-hand rectangular coordinate system; body coordinate system of intelligent bodyE Body -O b X b Y b Z b For being fixedly connected with the intelligent body, the origin of the coordinate system of the bodyO b At the center of mass of the agent (centroid);O b X b the shaft is in the symmetry plane of the intelligent body and is parallel to the axis of the intelligent body and points to the front;O b Y b axis perpendicular toO b X b A shaft;O b Z b the axis is in the symmetry plane of the agent, withO b X b Shaft andO b X b the axes are perpendicular and form a right-hand rectangular coordinate system.
As shown in fig. 2, the drone isInertial frameE Ground -OXYZThe position of (1) is defined as follows:
p ti is shown asiUnmanned aerial vehicle on ground coordinate systemE Ground -OXYZThe coordinate vector of (a) is calculated,p ti =[x ti ,y ti ,z ti ]；
x ti is shown asiUnmanned aerial vehicle on ground coordinate systemE Ground -OXYZCoordinates in the medium X direction;
y ti is shown asiUnmanned aerial vehicle on ground coordinate systemE Ground (floor) -OXYZCoordinates in the medium Y direction;
z ti denotes the firstiUnmanned aerial vehicle on ground coordinate systemE Ground (floor) -OXYZCoordinates in the middle Z direction.
Unmanned vehicle in inertial coordinate systemE Ground (floor) -OXYZThe position of (1) is defined as follows:
p gj is shown asjGround coordinate system of unmanned vehicleE Ground -OXYZThe coordinate vector of (a) is calculated,p gj =[x gj ,y gj ,z gj ]；
x gj is shown asjGround coordinate system of unmanned vehicleE Ground (floor) -OXYZCoordinates in the medium X direction;
y gj is shown asjGround coordinate system of unmanned vehicleE Ground -OXYZCoordinates in the medium Y direction;
z gj is shown asjGround coordinate system of unmanned vehicleE Ground -OXYZCoordinates in the middle Z direction.
The formation center of the air-ground intelligent agent cooperative formation isThe whole formation system provides a reference track, and the position of the formation center in an inertial coordinate system isp 0 =[x 0 ,y 0 ,z 0 ](ii) a The formation center is an unmanned aerial vehicle or an unmanned vehicle in the air-ground intelligent agent, and other unmanned aerial vehicles and unmanned vehicles respectively keep relative motion tracks with the formation center to complete a cooperative formation task.
An embodiment of the present invention, as shown in fig. 1-3, discloses a method for controlling air-ground intelligent agent cooperative formation, comprising the following steps:
step one, establishing an air-ground intelligent agent cooperation formation motion model of an unmanned aerial vehicle and an unmanned vehicle:
wherein the content of the first and second substances,p ti denotes the firstiA coordinate vector of the unmanned aerial vehicle in the flight process,
is shown asiErecting a flight acceleration vector of the unmanned aerial vehicle;R ti representing the inertial coordinate system andierecting a conversion matrix between the coordinate systems of the unmanned aerial vehicle body;F if is shown asiAerodynamic force generated by the unmanned aerial vehicle body is erected; grepresenting a gravity constant;c 3,3 a three-dimensional column vector is represented,c 3,3 =[0 0 1] T ；D pi is shown asiThe unmanned aerial vehicle is provided with an external interference force and an unknown model part under the influence of environmental wind;ω ti is shown asiErecting the angular speed of the unmanned aerial vehicle rotating around the self body coordinate system;
denotes the firstiErecting the angular acceleration of the unmanned aerial vehicle rotating around the self body coordinate system;
show thatω ti Performing antisymmetric matrix operation;J ti denotes the firstiErecting the rotational inertia of the unmanned aerial vehicle;u pi is shown asiThe position of the unmanned aerial vehicle position is fused with a control instruction,u ai denotes the firstiAn unmanned aerial vehicle attitude control input instruction is erected;M iw is as followsiThe unmanned aerial vehicle is supported by aerodynamic moment;
is shown asjThe vehicle is unmannedOXShaft andOYa three-dimensional vector consisting of an acceleration in the axial direction and an angular acceleration in the yaw direction;u gi denotes the firstjFusing control instructions on the positions of the unmanned vehicles;D ai is shown asiThe unmanned aerial vehicle is provided with an external interference moment and an unknown model part under the influence of environmental wind;D gj denotes the firstjThe unmanned vehicle is influenced by the external interference and the unknown part of the model due to the environmental wind;B pi ，B ai andB gj denotes the firstiParameter matrix of the position of the unmanned aerial vehicle, secondiErecting a parameter matrix and a parameter matrix of the pose of the dronejA parameter matrix of the position of the vehicle without the vehicle,E gj is shown asjUnmanned vehicleOXShaft andOYacceleration vectors of the coupling of the acceleration in the axial direction and the yaw direction angular acceleration are respectively expressed as follows:
wherein the content of the first and second substances,m ti is shown asiErecting the mass of the unmanned aerial vehicle;m gj is shown asjMass of the unmanned vehicle;V xj denotes the firstjThe vehicle is unmannedOXSpeed in the axial direction;V yj is shown asjThe vehicle is unmannedOYSpeed in the axial direction;J gj is shown asjThe moment of inertia of the unmanned vehicle;Q gj is shown asjAngular velocity of the unmanned vehicle in the yaw direction;C gj is shown asjThe drag coefficient of the unmanned vehicle in the running process.
And step two, establishing a nominal control law of the unmanned aerial vehicle and the unmanned vehicle according to the motion model of the air-ground cooperative formation of the unmanned aerial vehicle and the unmanned vehicle in the step one, and realizing expected formation control.
The nominal control input instructions of the unmanned aerial vehicle and the unmanned aerial vehicle are as follows:
wherein, the first and the second end of the pipe are connected with each other,u pi N ，u ai N respectively representiA position nominal control instruction and an attitude nominal control instruction of the unmanned aerial vehicle,u gj N denotes the firstjControlling a nominal command of the position of the unmanned vehicle;K tp ，K td is shown asiErecting two 3 x 3 parameter matrixes of a nominal controller on a position channel of the unmanned aerial vehicle;K ap ，K ad is shown asiErecting two 3 x 3 nominal controller parameter matrixes of a nominal controller on an unmanned aerial vehicle attitude channel;K gp ，K gd denotes the firstjTwo 3 x 3 parameter matrices of a nominal controller for an unmanned vehicle;q ti is shown asiPut the last one of unmanned aerial vehicle position passagewayA nominal controller parameter constant;q ai is shown asiErecting a nominal controller parameter constant on an unmanned aerial vehicle attitude channel;q gj is shown asjA nominal controller parameter constant for the unmanned vehicle;Z ti is shown asiSetting up the position motion error of the unmanned aerial vehicle in the formation;Z gj is shown asjThe position motion error of the unmanned vehicles in the formation;
representing the state information of the formation center of the air-ground cooperative formation in an inertial coordinate system;e ai is shown asiThe attitude error of the unmanned aerial vehicle is erected,
is shown asiErecting an attitude angular velocity error of the unmanned aerial vehicle;
representing a first-order sliding mode surface of air-ground cooperative formation nominal control;
wherein the content of the first and second substances,
；w ik is shown asiErect unmanned aerial vehicle and secondiErect unmanned aerial vehiclekA weight coefficient of frame neighbor unmanned aerial vehicle communication;p ti is shown asiCoordinate vectors of the unmanned aerial vehicle in the ground coordinate system,p tk is shown asiErect unmanned aerial vehiclekErecting a coordinate vector of the neighbor unmanned aerial vehicle in a ground coordinate system;w jn is shown asjThe unmanned vehicle and the firstjThe first of unmanned vehiclesnThe weight coefficient of the vehicle neighbor unmanned vehicle communication,p gj is shown asjCoordinate vectors of the unmanned vehicle in the ground coordinate system,p gn is shown asjFirst of unmanned vehiclenCoordinate vectors of the neighboring unmanned vehicles in the ground coordinate system;h ti is shown asiErect unmanned aerial vehicle andposition deviation of formation center;h gj is shown asjThe position deviation between the unmanned vehicle and the formation center;h tk is shown asiErect unmanned aerial vehiclekErecting the position deviation between the neighboring unmanned aerial vehicle and the formation center;h gn is shown asjFirst of unmanned vehiclenThe position deviation between the unmanned vehicle of the vehicle neighbor and the formation center; first, theiErect unmanned aerial vehicle and secondiErect unmanned aerial vehiclekThe position deviation of the unmanned aerial vehicle adjacent to the frame ish tik =h ti -h tk (ii) a First, thejUnmanned vehicle and the firstjFirst of unmanned vehiclenThe position deviation of the neighboring unmanned vehicle ish gjn =h gj -h gn 。
wherein, the first and the second end of the pipe are connected with each other,e ti ，e ai ande gj respectively representiSet up unmanned aerial vehicle position error, secondiErect unmanned aerial vehicle attitude error and secondjThe vehicle has no position error of the vehicle;
respectively representiSpeed error of unmanned aerial vehicleiFrame unmanned aerial vehicle angular acceleration error and secondjVehicle unmanned vehicle speed error;K ti is shown asiErecting a 3 multiplied by 3 parameter matrix on a position channel of the unmanned aerial vehicle;K ai denotes the firstiErecting a 3 x 3 parameter matrix on an unmanned aerial vehicle attitude channel;K gj is shown asj3 x 3 parameter matrixes on the unmanned vehicle movement channel;S ti ，S ai andS gj respectively-represented air-ground intelligent agent collaborative editingFirst-order sliding mode surface for team nominal control
Integral of (2);τa time-integrated variable is represented by,d τ representing time integral variablesτThe increment of (a) is increased by (b),e ti (τ)，e ai (τ) Ande gi (τ) Respectively represent the firstiPosition error integral function of unmanned aerial vehicleiFrame unmanned aerial vehicle attitude error integral function and secondjAnd (4) a vehicle unmanned position error integral function.
Step three, establishing an interference suppression control command of the unmanned aerial vehicle and the unmanned vehicle according to the motion model of the air-ground cooperative formation of the unmanned aerial vehicle and the unmanned vehicle in the step one:
wherein the content of the first and second substances,u pi S is shown asiAn interference suppression control command is arranged on the unmanned aerial vehicle position channel,u ai S denotes the firstiAn interference suppression control instruction is erected on the unmanned aerial vehicle attitude channel,u gj S is shown asjA vehicle unmanned vehicle interference suppression control command;l pi ，l ps denotes the firstiTwo one-dimensional interference compensation control parameter constants on the unmanned aerial vehicle position channel,l ai ，l as is shown asiTwo one-dimensional interference compensation control parameter constants on the attitude channel of the unmanned aerial vehicle are erected,l gj ，l gs is shown asjTwo parameter constants of one-dimensional interference compensation control of the unmanned vehicle;
represents a step function if
，
Otherwise
Represents a step function if
，
Otherwise
The step function is represented by a function of a step,
if it is not
And step four, combining the nominal control command and the interference suppression control command of the step two and the step three to obtain a fusion control command, and further realizing the control of the unmanned aerial vehicle and the unmanned aerial vehicle. Referring to fig. 3, the fusion control command is:
another specific embodiment of the present invention, as shown in fig. 3, discloses an air-ground intelligent agent collaborative formation control system, which uses the foregoing control method to generate a nominal control instruction, an interference suppression instruction, and a fusion control instruction, and includes an air-ground collaborative system dynamic module 100, a nominal control module 200, an interference suppression control module 300, and a control instruction fusion module 400, where the air-ground intelligent agents are unmanned aerial vehicles and unmanned vehicles.
The nominal control module 200 is used for receiving self-state information and neighbor state information of the unmanned aerial vehicle and the unmanned aerial vehicle, and obtaining a nominal control instruction (such as control precision) after processing the self-state information and the neighbor state information; and outputs the nominal control command to the control command fusion module 400;
the interference compensation control module 300 is configured to receive self state information of the unmanned aerial vehicle and the unmanned vehicle, process the self state information to obtain an interference suppression control instruction, and suppress external interference and an unknown part of the model; and outputs the interference suppression control command to the control command fusion module 400;
a control command fusion module 400, configured to process the nominal control command and the interference suppression control command to obtain a fusion control command; and outputs the fusion control instruction to the air-ground cooperative system dynamic model 100.
The air-ground cooperative system dynamic module 100 comprises an unmanned aerial vehicle dynamic module and an unmanned vehicle dynamic module, and is used for receiving a fusion control instruction and controlling the unmanned aerial vehicle and the unmanned vehicle to operate.
For the convenience of understanding, the method of the present invention is illustrated in detail in the following examples, but the present invention can be implemented by being applied to other embodiments, and therefore, the scope of the present invention is not limited to the following examples.
In the invention, when 2 unmanned aerial vehicles and 2 unmanned vehicles execute tasks, the cooperative formation control is carried out according to the air-ground intelligent agent cooperative formation control method.
Establishing a motion model of an air-ground cooperative formation of the unmanned aerial vehicle and the unmanned vehicle, and setting model parameters as follows:
constant of gravitational forceg=10; first, theiParameter matrix for unmanned aerial vehicle positionB pi The first stepiParameter matrix for unmanned aerial vehicle attitudeB ai And a firstjParameter matrix of unmanned vehicle positionB gj The setting is as follows:B pi =diag{0.02,0.02,0.02}，B ai =diag{5,5,2.5}，B gj =diag{0.001,0.001,0.002}。
the external natural wind interference on the system is set as follows:
wherein, the first and the second end of the pipe are connected with each other,trepresenting time, the external environment interference considered by the embodiment is changed along with time; the model parameter uncertainty was considered to be 25% of the ideal parameter.
Nominal control law parameters were set to:K tp =diag{132.6,132.6,132.6}，K td =diag{55.2, 55.2, 55.2}，K ap =diag{160.5, 160.5, 160.5}，K ad =diag{110.8, 110.8, 110.8}，K gp =diag{330, 330, 330}，K gd =diag{155.1, 155.1, 155.1}；K ti = K ai =K gj =diag{2, 2, 2}；q ti =q ai =q gj =15. The nominal control instructions of the unmanned aerial vehicle and the unmanned aerial vehicle can be obtained through the set interference suppression control law parameters and the position state information of the formationu pi N ，u ai N ，u gj N 。
The interference suppression parameters of the unmanned aerial vehicle and the unmanned aerial vehicle are set as follows:l pi =l ai =l gj =10，l ps = l as =l gs =60. Interference suppression control instructions of the unmanned aerial vehicle and the unmanned aerial vehicle can be obtained through the set interference suppression control law parameters and the position state information of the formationu pi S ，u ai S ，u gj S 。
Combining the nominal control instruction and the interference suppression control instruction in the second step and the third step to obtain a fusion control instructionu pi ，u ai ，u gj Therefore, the control of the air-ground cooperative formation is realized.
Simulation result analysis, 2 unmanned aerial vehicles and 2 unmanned vehiclesCarrying out simulation through a Matlab control system; set up two unmanned aerial vehicle and two unmanned vehicle initial position as follows:p t1 (0)=[0 6 0] T ，p t2 (0)=[-6 0 0] T ，p g1 (0)=[0 6 0] T ，p g2 (0)=[-6 0 0] T 。
the deviation of the expected states of the unmanned aerial vehicle and the unmanned vehicle from the formation center is set as follows: time of flightt<At the time of 10s, the temperature of the reaction kettle is increased,h t1 (0)=[0 6 0] T ，h t2 (0)=[0 0 0] T ，h g1 (0)=[0 6 0] T ，h g2 (0)=[0 0 0] T (ii) a Time of flighttWhen the time is more than or equal to 10s,h t1 (0)=[0 6 0] T ，h t2 (0)=[12-12e t -(-10) 0 0] T ，h g1 (0)=[0 6 0] T ，h g2 (0)=[ 12-12e t -(-10) 0 0] T 。
as can be seen from FIG. 4, the method can realize better cooperation between the unmanned aerial vehicle and the unmanned vehicle formation, can effectively inhibit the influence of unknown system models and external interference, and has good robustness. As can be seen from FIGS. 5 a-6 b, the air-ground intelligent agent has small cooperative error and can meet the control precision requirement.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (7)
1. A method for controlling air-ground intelligent agent cooperative formation is characterized by comprising the following steps:
step one, establishing a motion model of an unmanned aerial vehicle and an air-ground intelligent agent cooperative formation of the unmanned aerial vehicle:
wherein the content of the first and second substances,p ti is shown asiA coordinate vector of the unmanned aerial vehicle in the flight process,
is shown asiSetting a flight acceleration vector of the unmanned aerial vehicle;R ti representing the inertial coordinate system andierecting a conversion matrix between the coordinate systems of the unmanned aerial vehicle body;F if denotes the firstiAerodynamic force generated by the unmanned aerial vehicle body is erected;grepresenting a gravity constant;c 3,3 representing a three-dimensional column vector;D pi is shown asiErecting an external interference force and an unknown part of a model of the unmanned aerial vehicle under the influence of environmental wind;ω ti is shown asiErecting the angular speed of the unmanned aerial vehicle rotating around the self body coordinate system;
denotes the firstiErecting the angular acceleration of the unmanned aerial vehicle rotating around the self body coordinate system;
show thatω ti Performing antisymmetric matrix operation;J ti is shown asiErecting the rotational inertia of the unmanned aerial vehicle;u pi is shown asiThe position of the unmanned aerial vehicle is fused with a control command,u ai is shown asiAn unmanned aerial vehicle attitude control input instruction is erected;M iw is as followsiThe unmanned aerial vehicle is supported by aerodynamic moment;
is shown asjThe vehicle is unmannedOXShaft andOYacceleration in axial direction and yaw direction angleA three-dimensional vector consisting of accelerations;u gj is shown asjFusing control instructions on the positions of the unmanned vehicles;D ai denotes the firstiThe unmanned aerial vehicle is provided with an external interference moment and an unknown model part under the influence of environmental wind;D gj is shown asjThe unmanned vehicle is influenced by the external interference and the unknown part of the model due to the environmental wind;
B pi ，B ai andB gj respectively representiSet up parameter matrix, the second of unmanned aerial vehicle positioniParameter matrix and first of unmanned aerial vehicle attitudejA parameter matrix of the positions of the vehicles without vehicles,E gj is shown asjAcceleration vector of acceleration and yaw direction angular acceleration coupling of the unmanned vehicle;
step two, establishing a nominal control law of the unmanned aerial vehicle and the unmanned vehicle according to the motion models of the unmanned aerial vehicle and the unmanned vehicle in the step one, wherein the motion models are formed by the unmanned aerial vehicle and the unmanned vehicle in an air-ground intelligent agent cooperation mode;
step three, establishing an interference suppression control law of the unmanned aerial vehicle and the unmanned vehicle according to the motion models of the unmanned aerial vehicle and the unmanned vehicle air-ground intelligent agent cooperative formation in the step one;
and step four, combining the nominal control law and the interference suppression control law in the step two and the step three to obtain a fusion control law.
2. The air-ground intelligent agent cooperative formation control method according to claim 1, wherein the first step isiParameter matrix for unmanned aerial vehicle positionB pi The first stepiParameter matrix for unmanned aerial vehicle attitudeB ai And a firstjParameter matrix of unmanned vehicle positionB gj And a firstjAcceleration vector of acceleration and yaw direction angular acceleration coupling of unmanned vehicleE gj Respectively, as follows:
wherein the content of the first and second substances,m ti is shown asiErecting the mass of the unmanned aerial vehicle;m gj denotes the firstjMass of the unmanned vehicle;V xj is shown asjThe vehicle is unmannedOXSpeed in the axial direction;V yj denotes the firstjThe vehicle is unmannedOYSpeed in the axial direction;J gj denotes the firstjThe moment of inertia of the unmanned vehicle;Q gj denotes the firstjAngular velocity of the unmanned vehicle in the yaw direction;C gj denotes the firstjThe drag coefficient of the unmanned vehicle in the running process.
3. The air-ground intelligent agent collaborative formation control method according to claim 1, wherein the nominal control laws of the unmanned aerial vehicle and the unmanned vehicle in the second step are as follows:
wherein, the first and the second end of the pipe are connected with each other,u pi N ，u ai N respectively represent the firstiA nominal control command for the position and a nominal control command for the attitude of the unmanned aerial vehicle,u gj N denotes the firstjVehicle unmannedA vehicle position control nominal command;K tp ，K td denotes the firstiErecting two 3 x 3 parameter matrixes of a nominal controller on a position channel of the unmanned aerial vehicle;K ap ，K ad is shown asiErecting two 3 multiplied by 3 nominal controller parameter matrixes of a nominal controller on an unmanned aerial vehicle attitude channel;K gp ，K gd denotes the firstjTwo 3 x 3 parameter matrices of a nominal controller for an unmanned vehicle;q ti is shown asiSetting a nominal controller parameter constant on the unmanned aerial vehicle position channel;q ai is shown asiErecting a nominal controller parameter constant on an unmanned aerial vehicle attitude channel;q gj denotes the firstjA nominal controller parameter constant for the unmanned vehicle;Z ti is shown asiErecting a position motion error of the unmanned aerial vehicle in a formation;Z gj is shown asjThe position motion error of the unmanned vehicles in the formation;
representing the state information of the formation center of the air-ground cooperative formation in an inertial coordinate system;e ai is shown asiThe attitude error of the unmanned aerial vehicle is erected,
is shown asiErecting an attitude angular velocity error of the unmanned aerial vehicle;
and the first-order sliding mode surface represents the nominal control of the air-ground intelligent agent cooperation formation.
4. The air-ground intelligent agent cooperative formation control method according to claim 3, wherein the second step isiPosition motion error of unmanned aerial vehicle in formationZ ti And a firstjPosition motion error of unmanned vehicle in formationZ gj The expression is as follows:
wherein the content of the first and second substances,w ik is shown asiErect unmanned aerial vehicle and secondiErect unmanned aerial vehiclekA weight coefficient of frame neighbor unmanned aerial vehicle communication;p ti denotes the firstiErecting a coordinate vector of the unmanned aerial vehicle in a ground coordinate system,p tk is shown asiErect unmanned aerial vehiclekErecting a coordinate vector of the neighbor unmanned aerial vehicle in a ground coordinate system;w jn is shown asjThe unmanned vehicle and the firstjThe first of unmanned vehiclesnThe weighting factor of the vehicle-to-vehicle communication of the vehicle neighbors,p gj is shown asjCoordinate vectors of the unmanned vehicle in the ground coordinate system,p gn denotes the firstjFirst of unmanned vehiclenCoordinate vectors of the neighboring unmanned vehicles in the ground coordinate system;h ti denotes the firstiSetting up the position deviation of the unmanned aerial vehicle and the formation center;h gj is shown asjThe position deviation between the unmanned vehicle and the formation center;h tk is shown asiErect unmanned aerial vehiclekErecting position deviation between the neighboring unmanned aerial vehicles and the formation center;h gn is shown asjThe first of unmanned vehiclesnThe position deviation between the unmanned vehicle of the vehicle neighbor and the formation center; first, theiErect unmanned aerial vehicle and secondiErect unmanned aerial vehiclekThe position deviation of the unmanned aerial vehicle adjacent to the frame ish tik =h ti -h tk (ii) a First, thejThe unmanned vehicle and the firstjFirst of unmanned vehiclenThe position deviation of the neighboring unmanned vehicle ish gjn =h gj -h gn 。
5. The air-ground agent collaborative formation control method according to claim 3, wherein the first-order sliding mode of nominal control of air-ground agent collaborative formation in the second step
The expression is as follows:
wherein the content of the first and second substances,e ti ，e ai ande gj respectively represent the firstiSet up unmanned aerial vehicle position error, secondiErect unmanned aerial vehicle attitude error andjthe vehicle has no position error of the vehicle;
respectively representiSpeed error of unmanned aerial vehicleiFrame unmanned aerial vehicle angular acceleration error and secondjVehicle unmanned vehicle speed error;K ti is shown asiErecting a 3 x 3 parameter matrix on the unmanned aerial vehicle position channel;K ai is shown asiErecting a 3 x 3 parameter matrix on an unmanned aerial vehicle attitude channel;K gj is shown asj3 x 3 parameter matrixes on the moving channel of the unmanned vehicle;S ti ，S ai andS gj first-order sliding mode surface for respectively representing air-ground intelligent agent collaborative formation nominal control
Integral of (1);τa time-integrated variable is represented by,d τ representing integral variablesτThe increment of (a) is increased by (b),e ti (τ)，e ai (τ) Ande gi (τ) Respectively representiPosition error integral function of unmanned aerial vehicleiFrame unmanned aerial vehicle attitude error integral function and secondjAnd (4) a vehicle unmanned position error integral function.
6. The air-ground agent cooperative formation control method according to claim 1, wherein the interference suppression control law of the unmanned aerial vehicle and the unmanned vehicle in the third step is as follows:
wherein, the first and the second end of the pipe are connected with each other,u pi S denotes the firstiAn interference suppression control instruction is arranged on the unmanned aerial vehicle position channel,u ai S is shown asiAn interference suppression control instruction is set on the attitude channel of the unmanned aerial vehicle,u gj S is shown asjA vehicle unmanned vehicle interference suppression control instruction;l pi ，l ps denotes the firstiTwo one-dimensional interference compensation control parameter constants on the unmanned aerial vehicle position channel,l ai ，l as is shown asiTwo one-dimensional interference compensation control parameter constants on the attitude channel of the unmanned aerial vehicle are erected,l gj ，l gs is shown asjTwo parameter constants of one-dimensional interference compensation control of the unmanned vehicle;
represents a step function if
，
Otherwise
Represents a step function if
，
Otherwise
The step function is represented by a function of a step,
if it is used
7. An air-ground intelligent agent cooperation formation control system comprises an air-ground cooperation system dynamic module, a nominal control module, an interference suppression control module and a control instruction fusion module;
the nominal control module is used for receiving self state information and neighbor state information of the unmanned aerial vehicle and the unmanned aerial vehicle, and obtaining a nominal control instruction after processing the self state information and the neighbor state information; outputting the nominal control instruction to a control instruction fusion module;
the interference compensation control module is used for receiving self state information of the unmanned aerial vehicle and the unmanned aerial vehicle, and obtaining an interference suppression control instruction after processing the self state information; outputting the interference suppression control instruction to a control instruction fusion module;
the control instruction fusion module is used for processing the nominal control instruction and the interference suppression control instruction to obtain a fusion control instruction; outputting the fusion control instruction to a dynamic module of the air-ground cooperative system;
the air-ground cooperative system dynamic module comprises an unmanned aerial vehicle dynamic module and an unmanned vehicle dynamic module and is used for receiving a fusion control instruction and controlling the operation of the unmanned aerial vehicle and the unmanned vehicle.
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